Malicious PDF — malware analysis report

Static analysis result for SHA-256 504ec94076d38ea5…

MALICIOUS

PDF

37.8 KB Created: 2020-08-20 02:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9954b933517524e93c69c515d4485c5e SHA-1: d5ca0efc86d389ca510014acd668c8bbc55a6b13 SHA-256: 504ec94076d38ea5a5f3e6b8b6f2e06a7a6d232bf5b276466cc6c1f306ecb966
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though partially corrupted, contains text related to 'contents page template google docs' and the malicious redirector URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=contents+page+template+google+docs
    • http://files.lisafranek.com/uploads/1/3/1/4/131438313/70da2bdb.pdf
    • http://nojumeji.mrknifeguy.ca/uploads/1/3/1/0/131070374/eea82852.pdf
    • http://files.sweetlyhosted.org/uploads/1/3/1/3/131379540/pogakatazab.pdf
    • https://cdn.shopify.com/s/files/1/0466/7808/1701/files/netflix_free_for_lg_smart_tv.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/nixuxepesafizetolinasat.pdf
    • https://cdn.shopify.com/s/files/1/0433/5684/8282/files/ielts_speaking_cue_card_2020_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/koxomonixefafozadewatoge.pdf
    • https://cdn.shopify.com/s/files/1/0432/4546/9858/files/zuvelivojewujapibaja.pdf
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/83092007266.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/where_is_my_hammer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4107173541.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000587d.bin
c27606270b5fda885638558170b64169e3da38254192454b0bf94687005a7c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x587D 5200 bytes
font_01_sfnt_off00006a19.bin
ba4dd9bfbc5fc6b9b4c34c69b27ef5a6edcc62ca813a0cd9f304ddf84aa53adc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A19 9564 bytes

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